I posted once before (http://plairdblog.blogspot.com/2008/12/merry-christmas-eve-day.html) about a personal Christmas card I made which incorporated an Advent calendar. I found another one -- it's undated, but judging from the style of drawing (especially the "old-school" Turtles), I would guess it was from December of 1984.
I drew the top part on coquille board. This card was pretty big -- each half was 8.1 by 11 inches, so when taped together in the middle, they made a folding card which was 22 inches wide and 8.5 inches high when opened. Here's what the card looked like when unfolded:
And here are the little surprises which would be found as each "door" in the card was opened:
I think this may have been the second and last of these cards that I did -- they just got to be too labor-intensive and time-consuming. But that being said, they were also a lot of fun. -- PL